CN213238295U

CN213238295U - Baking device

Info

Publication number: CN213238295U
Application number: CN202022239425.1U
Authority: CN
Inventors: 高冲; 程辉
Original assignee: Hefei Guoxuan High Tech Power Energy Co Ltd
Current assignee: Hefei Gotion High Tech Power Energy Co Ltd
Priority date: 2020-10-10
Filing date: 2020-10-10
Publication date: 2021-05-18
Anticipated expiration: 2030-10-10

Abstract

The utility model discloses a baking device, which comprises a hollow shell, wherein a feed inlet and a discharge outlet are arranged on the shell, and a preheating cavity, a baking cavity and a cooling cavity are arranged in the shell; the feed inlet is arranged on the preheating cavity, and the discharge outlet is arranged on the cooling cavity; a first communicating port is arranged between the preheating cavity and the baking cavity, and a second communicating port is arranged between the baking cavity and the cooling cavity; at least one heater is arranged in the baking cavity; the first fan is arranged in the cooling cavity, the second fan is arranged in the baking cavity, the first fan is used for blowing the wind in the cooling cavity to the preheating cavity or the baking cavity, and the second fan is used for blowing the wind in the baking cavity to the preheating cavity; the driving mechanism comprises a material belt, a supporting component used for tensioning the material belt, and a driving component used for driving the material belt to move. The utility model provides a baking equipment can high heat utilization ratio to reduce equipment and area, reduce cost.

Description

Baking device

Technical Field

The utility model relates to a lithium ion battery production and processing technology field, in particular to baking device.

Background

The lithium ion battery is a battery with high energy density, has a plurality of outstanding advantages of light weight, large energy storage, large power, no pollution, long service life, small self-discharge coefficient, wide temperature adaptation range and the like, and is widely applied.

As lithium ion batteries are applied more and more widely, performance and safety requirements are stricter. In the process of manufacturing the battery core, the moisture control of the electrode plate is very important. If the moisture content exceeds the standard, negative effects can be generated on the performance of the battery, including voltage, internal resistance, automatic discharge and other indexes, so that the cycle performance of the battery is reduced. Therefore, the electrode sheet needs to be subjected to a baking and drying process.

At present, in the process of manufacturing a battery core of a lithium ion battery, the battery core is generally assembled into an aluminum shell, and the baking operation of the battery is performed before liquid injection; however, as the battery cell enters the aluminum shell, the battery cell is assembled more tightly, and the moisture is difficult to overflow. The moisture during baking can only be generally diffused through the liquid injection hole, so that the specified moisture requirement can be met only by continuously baking for 6-12 hours, the baking process is long in time consumption and low in efficiency, and the problem to be solved urgently in the manufacturing process of the lithium ion battery is solved.

In order to solve the above-mentioned baking difficulties, some manufacturers have proposed an apparatus for uncoiling and baking pole pieces. For example, chinese patent No. CN206789635U discloses a baking apparatus for lithium ion battery electrode plates, as shown in fig. 1, the apparatus includes: the device comprises an oven 1, a heating device 4, an unreeling device 2 and a reeling device 5, wherein the unreeling device 2 and the reeling device 5 are respectively arranged in the oven 1, at least one rotating shaft 3 is arranged between the unreeling device 2 and the reeling device 5, and a pole piece material roll on the unreeling device 2 is reeled on the reeling device 5 through the rotating shaft 3 after unreeling; heating devices 4 are respectively arranged above the winding surface and below the winding surface of the pole piece material coil. On the whole, when this lithium ion battery pole piece baking equipment used, the battery pole piece was the state of opening a book in toasting.

However, the applicant found that: the prior pole piece uncoiling and baking equipment has low heat utilization rate, and further has the disadvantages of more pole piece uncoiling and baking equipment, large occupied area and high cost in use.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned defect of prior art, the embodiment of the utility model provides a technical problem that will solve provides a baking equipment, and it can improve heat utilization rate to reduce equipment and area, reduce cost.

The embodiment of the utility model provides a concrete technical scheme is:

a toasting apparatus, the toasting apparatus comprising: the device comprises a hollow shell, a feed inlet and a discharge outlet are arranged on the shell, and a preheating cavity, a baking cavity and a cooling cavity are arranged in the shell; the feed inlet is arranged on the preheating cavity, and the discharge outlet is arranged on the cooling cavity; a first communicating port is arranged between the preheating cavity and the baking cavity, and a second communicating port is arranged between the baking cavity and the cooling cavity; at least one heater is arranged in the baking cavity; the cooling cavity is internally provided with a first fan, the baking cavity is internally provided with a second fan, the first fan is used for blowing the wind of the cooling cavity to the preheating cavity or the baking cavity, and the second fan is used for blowing the wind of the baking cavity to the preheating cavity; the driving mechanism comprises a material belt, a supporting component used for tensioning the material belt, and a driving component used for driving the material belt to move.

In a preferred embodiment, the driving assembly comprises at least two sets of sprocket assemblies disposed outside the housing, a motor for driving at least one set of the sprocket assemblies; the chain wheel component can drive the material belt from the feed inlet passes through in proper order preheat the chamber first intercommunication mouth bake the chamber second intercommunication mouth the cooling chamber extremely the discharge gate.

In a preferred embodiment, the sprocket assembly includes: sprocket, cross the roller, it is used for the winding to cross the roller the material area, the sprocket distributes cross the both ends of roller, drive assembly still include with sprocket matched with chain.

In a preferred embodiment, the support assembly comprises: the first supporting piece is arranged in the preheating cavity, the second supporting piece is arranged in the baking cavity, and the third supporting piece is arranged in the cooling cavity.

In a preferred embodiment, the first support comprises a plurality of first support shafts on which the strip of material is reciprocally tensioned.

In a preferred embodiment, the number of the heaters is plural, the plural heaters are arranged in the baking chamber along a predetermined pattern, and the second support member includes a plurality of second support shafts, the plural second support shafts being arranged at intervals around the heaters.

In a preferred embodiment, the number of the heaters is four, and the four heaters are arranged in the baking cavity in an array distribution manner.

In a preferred embodiment, the third support comprises a plurality of third support shafts on which the strip of material is reciprocally tensioned.

In a preferred embodiment, a third fan is disposed in the preheating chamber, the third fan blows the airflow in the preheating chamber out of the housing, and airflow circulation is formed in the baking device under the action of the third fan and the first and second fans.

In a preferred embodiment, the baking device further includes a feeding belt connecting platform and a discharging belt connecting platform, the feeding belt connecting platform is disposed outside the housing and close to the feeding port, and the discharging belt connecting platform is disposed outside the housing and close to the discharging port.

The technical scheme of the utility model following beneficial effect that is showing has:

the application provides a baking equipment, during the use, the material area gets into from the feed inlet and preheats the chamber, then gets into through first intercommunication mouth and toasts the chamber, heats through the heater and toasts, gets into the cooling chamber through second intercommunication mouth afterwards and cools off, flows from the discharge gate at last. The interior of a shell 70 of the baking device is divided into a preheating cavity, a baking cavity and a cooling cavity which are relatively independent, and a heater is only arranged in the baking cavity, wherein heat can be input into the preheating cavity through a first fan in a discharging cavity and a second fan in the baking cavity, so that on one hand, the heat utilization rate is improved, the equipment and the occupied area are reduced, and the processing cost is reduced; on the other hand, the device can also play a role in supplementing fresh air and removing baking waste gas. In addition, the baking device provided by the application prolongs the baking path through the optimization of the internal baking path, improves the heat utilization rate, can further reduce equipment and occupied area, and reduces the processing cost.

Specific embodiments of the present invention are disclosed in detail with reference to the following description and the accompanying drawings, which specify the manner in which the principles of the invention may be employed. It should be understood that the embodiments of the present invention are not so limited in scope. The embodiments of the invention include many variations, modifications and equivalents within the spirit and scope of the appended claims. Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.

Drawings

The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for helping the understanding of the present invention, and do not specifically limit the shapes, the proportional sizes, and the like of the respective members of the present invention. The skilled person in the art can, under the teaching of the present invention, choose various possible shapes and proportional dimensions to implement the invention according to the specific situation.

Fig. 1 is a schematic structural diagram of a baking apparatus for a lithium ion battery electrode plate provided in the prior art;

FIG. 2 is a schematic structural diagram of a toasting apparatus according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram of a toasting device provided with a sprocket assembly according to an embodiment of the present application;

FIG. 4 is a schematic structural view of a sprocket assembly of a toasting device according to embodiments of the present application;

reference numerals of the above figures:

1. an oven; 2. an unwinding device; 3. a rotating shaft; 4. a heating device; 5. a winding device; 40. a material belt; 50. a feeding belt splicing platform; 60. a discharging belt connecting platform; 70. a housing; 701. a preheating chamber; 702. a baking chamber; 703. a cooling chamber; 704. a feed inlet; 7051. a first fan; 7052. a second fan; 7053. a third fan; 706. a heater; 707. a discharge port; 708. a sprocket assembly; 709. a chain; 7081. a sprocket; 7082. passing through a roller; 7083. an electric motor.

Detailed Description

The technical solution of the present invention will be described in detail with reference to the accompanying drawings and specific embodiments, it should be understood that these embodiments are only used for illustrating the present invention and are not used for limiting the scope of the present invention, and after reading the present invention, the modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the claims attached to the present application.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 2 to 3, in the embodiments of the present disclosure, a baking apparatus is provided, which may be used for baking a positive plate, a negative plate, and a separator. The baking device mainly comprises: a hollow housing 70, a heater 706, a fan, and a drive mechanism.

In the present embodiment, the housing 70 may have a hollow box structure, and in particular, the shape and the configuration of the housing 70 are not limited herein. The housing 70 is provided with a feed inlet 704 and a discharge outlet 707. A preheating chamber 701, a baking chamber 702 and a cooling chamber 703 are provided in the housing 70. The feed inlet 704 is disposed on the preheating chamber 701, and the discharge outlet 707 is disposed on the cooling chamber 703. A first communicating port is arranged between the preheating cavity 701 and the baking cavity 702, and a second communicating port is arranged between the baking cavity 702 and the cooling cavity 703. At least one heater 706 is disposed in the bake chamber 702. The cooling cavity 703 is provided with a first fan 7051, the baking cavity 702 is provided with a second fan 7052, the first fan 7051 is used for blowing the wind in the cooling cavity 703 to the preheating cavity 701 or the baking cavity 702, and the second fan 7052 is used for blowing the wind in the baking cavity 702 to the preheating cavity 701.

In this embodiment, the driving mechanism may include the tape 40, a supporting assembly for tensioning the tape 40, and a driving assembly for driving the tape 40 to move.

During use, the material belt 40 enters the preheating cavity 701 from the feeding hole 704 to be preheated, then enters the baking cavity 702 through the first communicating hole, is heated and baked by the heater 706, then enters the cooling cavity 703 through the second communicating hole to be cooled, and finally flows out from the discharging hole 707. The interior of the housing 70 of the baking device is divided into a preheating cavity 701, a baking cavity 702 and a cooling cavity 703 which are relatively independent, and a heater 706 is only arranged in the baking cavity 702, wherein heat can be input into the preheating cavity 701 through a first fan 7051 of the discharging cavity and a second fan 7052 in the baking cavity 702, so that on one hand, the heat utilization rate is improved, the equipment and the floor area are reduced, and the processing cost is reduced; on the other hand, the device can also play a role in supplementing fresh air and removing baking waste gas.

In this embodiment, in order to arrange the toasting device reasonably and reduce the occupied area of the toasting device, the preheating chamber 701 and the cooling chamber 703 are located above the toasting chamber 702. The sum of the volumes of both the preheating chamber 701 and the cooling chamber 703 is smaller than the volume of the baking chamber 702. A plurality of first fans 7051 may be disposed in the cooling chamber 703. For example, three first fans 7051 may be provided. Among them, one first fan 7051 may be disposed on the side wall of the cooling chamber 703 for forming an air flow to blow the heat of the cooling chamber 703 to the preheating chamber 701; a first fan 7051 may be disposed at the top of the cooling chamber 703 for cooling the strip of material 40; a first fan 7051 may be disposed on the bottom wall of the cooling chamber 703 for forming an air flow to blow heat of the cooling chamber 703 toward the baking chamber 702.

The second fan 7052 in the baking chamber 702 may be disposed at the interface between the baking chamber 702 and the preheating chamber 701, so as to form an air flow to blow the heat of the baking chamber 702 to the preheating chamber 701.

In addition, a third fan 7053 can be further arranged in the preheating cavity 701, and the third fan 7053 blows the airflow in the preheating cavity 701 out of the shell 70, so that a through airflow circulation is formed with the airflows of the first fan 7051 and the second fan 7052, and the functions of circularly supplementing fresh air and discharging baking waste gas are achieved.

In one embodiment, the drive assembly includes a sprocket assembly 708 disposed outside the housing 70 for driving a motor 7083 of the sprocket assembly 708. The sprocket assembly 708 is in transmission connection with the material belt 40, and drives the material belt 40 to sequentially pass through the preheating cavity 701, the first communicating port, the baking cavity 702, the second communicating port, the cooling cavity 703 from the feeding port 704 to the discharging port 707.

As shown in fig. 4, the sprocket assembly 708 may include: sprocket 7081, roller 7082. The over roller 7082 is used for winding the material belt 40 and two ends of the over roller are respectively fixedly connected with the chain wheel 7081. The over-roller 7082 is mounted on the equipment board of the toasting apparatus and is capable of rotating about its central axis. The chain 709 in turn engages with the sprocket 7081 in each sprocket assembly 708 and forms a closed loop.

In this embodiment, the driving assembly may further include two circulating chains 709. As shown in fig. 4, the chain 709 is engaged with the sprocket 7081, wherein the motor 7083 is mounted on one set of sprocket assembly 708, so that the entire sprocket assembly 708 can be driven to move, and the conveying and baking operations of the material tape 40 can be realized.

When the material belt 40 inside the baking device is broken, the material belt 40 is fixed on the chains 709 at two sides by using the adhesive tape, and along with the movement of the chains 709, the material belt 40 can pass through all the sprocket assemblies 708 inside the baking device, so that the automatic belt threading function is realized.

The baking apparatus further includes a feeding splicing platform 50 and a discharging splicing platform 60. The feeding belt platform 50 is disposed outside the housing 70 and near the feeding port 704, and the discharging belt platform 60 is disposed outside the housing 70 and near the discharging port 707. The feeding tape splicing platform 50 and the discharging tape splicing platform 60 are mainly used for splicing operation when the roll of the material tape 40 is changed and the tape is broken. When the roll change is needed, the operation can be carried out on the feeding splicing platform 50 and the discharging splicing platform 60.

In one embodiment, in order to further reduce the equipment and the floor space and reduce the processing cost, the applicant also optimizes the internal baking path of the baking device, prolongs the baking path and improves the heat utilization rate.

Specifically, the support assembly includes: a first support member provided in the preheating chamber 701, a second support member provided in the baking chamber 702, and a third support member provided in the cooling chamber 703.

Wherein the first support may include a first support frame and a plurality of first support shafts disposed on the first support frame. The first support frame is mainly used for rotatably supporting the first support shaft, and a specific form of the first support frame is not specifically limited herein. The strip of material 40 is tensioned back and forth on a first support shaft. Because the material belt 40 is tensioned on the first supporting shaft in a reciprocating manner, the reciprocating stroke of the material belt 40 in the preheating cavity 701 is prolonged, and the preheating effect of the pole piece can be better ensured.

In one embodiment, the number of the heaters 706 is plural, and the plural heaters 706 are arranged in the baking chamber 702 along a predetermined pattern. A second support frame is disposed in the baking cavity 702, and a plurality of second support shafts are disposed on the second support frame and are spaced around the heater 706. The specific form of the second support frame is not specifically limited herein. When the material belt 40 is tensioned around each heater 706 along the arrangement of the second support shaft, the baked objects such as pole pieces can be baked efficiently and reliably.

As shown in fig. 2 or fig. 3, specifically, the number of the heaters 706 may be four, and four heaters 706 are arranged in the baking chamber 702 in an array distribution manner. The heater 706 may be in the form of an infrared heater 706, but the heater 706 may also be in the form of an infrared heater, and the present application is not limited thereto.

The third support may include a third support frame and a plurality of third support shafts disposed on the third support frame. The third support frame is mainly used for rotatably supporting the third support shaft. The specific form of the third support frame is not specifically limited herein. The strip of material 40 is reciprocally tensioned over the third support shaft. Because the material belt 40 is tensioned on the third support shaft in a reciprocating manner, the reciprocating stroke of the material belt 40 in the cooling cavity 703 is prolonged, on one hand, the heat carried in the material belt 40 can be better ensured to be efficiently utilized, and on the other hand, the material belt 40 is also beneficial to being cooled sufficiently, efficiently and lowly under the action of the first fan 7051.

It should be noted that, in the description of the present application, the terms "first", "second", and the like are used for descriptive purposes only and for distinguishing similar objects, and no precedence between the two is intended or should be construed to indicate or imply relative importance. In addition, in the description of the present application, "a plurality" means two or more unless otherwise specified.

The above embodiments in the present specification are all described in a progressive manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment is described with emphasis on being different from other embodiments.

The above embodiments are only embodiments of the present invention, and although the embodiments of the present invention are disclosed as above, the contents are only embodiments adopted for facilitating understanding of the present invention, and are not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A toasting apparatus, comprising:

the device comprises a hollow shell, a feed inlet and a discharge outlet are arranged on the shell, and a preheating cavity, a baking cavity and a cooling cavity are arranged in the shell; the feed inlet is arranged on the preheating cavity, and the discharge outlet is arranged on the cooling cavity; a first communicating port is arranged between the preheating cavity and the baking cavity, and a second communicating port is arranged between the baking cavity and the cooling cavity;

at least one heater is arranged in the baking cavity;

the cooling cavity is internally provided with a first fan, the baking cavity is internally provided with a second fan, the first fan is used for blowing the wind of the cooling cavity to the preheating cavity or the baking cavity, and the second fan is used for blowing the wind of the baking cavity to the preheating cavity;

the driving mechanism comprises a material belt, a supporting component used for tensioning the material belt, and a driving component used for driving the material belt to move.

2. The toasting apparatus of claim 1 wherein said drive assembly includes at least two sets of sprocket assemblies disposed outside said housing for driving motors of at least one of said sets of sprocket assemblies; the chain wheel component can drive the material belt from the feed inlet passes through in proper order preheat the chamber first intercommunication mouth bake the chamber second intercommunication mouth the cooling chamber extremely the discharge gate.

3. The toasting apparatus of claim 2 wherein said sprocket assembly comprises: sprocket, cross the roller, it is used for the winding to cross the roller the material area, the sprocket distributes cross the both ends of roller, drive assembly still include with sprocket matched with chain.

4. The toasting apparatus of claim 1 wherein said support assembly comprises: the first supporting piece is arranged in the preheating cavity, the second supporting piece is arranged in the baking cavity, and the third supporting piece is arranged in the cooling cavity.

5. The toasting apparatus of claim 4 wherein said first support includes a plurality of first support shafts on which said strip of material is reciprocally tensioned.

6. The toasting apparatus of claim 4, wherein there are a plurality of said heaters, a plurality of said heaters being arranged in said toasting chamber in a predetermined pattern, said second support member including a plurality of second support shafts, a plurality of said second support shafts being spaced around said heaters.

7. The toasting apparatus according to claim 6 wherein said number of heaters is four and four heaters are arranged in said toasting chamber in an array.

8. The toasting apparatus of claim 4 wherein said third support means includes a plurality of third support shafts upon which said strip of material is reciprocally tensioned.

9. The toasting apparatus as claimed in claim 1, wherein a third fan is disposed in said preheating chamber, said third fan blowing the air flow in said preheating chamber out of said housing, and wherein an air flow circulation is formed in said toasting apparatus by said third fan and said first and second fans.

10. The toasting apparatus as claimed in claim 1, further comprising a feeding belt platform disposed outside the housing and adjacent to the feeding port, and a discharging belt platform disposed outside the housing and adjacent to the discharging port.